Deciduous Azalea luteum

Deciduous Azalea luteum

Item: ALUT

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Absolutely stunning and still one of the most popular highly scented yellow azaleas. Flowering in May this deciduous azalea has striking autumn yellow and orange leaf colour. A must for every garden and one of our favourites. A lovely old species that has become naturalized in parts of the British Isles and was very important in the development of the Ghent hybrids. Height 120-150cm in 10 years.

Some people still refer to this by its old name, Azalea pontica.

Please note that due to the stocky nature and slower growth rate of Azalea luteum, young plants will be nice and well branched but are smaller in size than more vigorous hybrid plants in the same pot size.

  • Recommended for wonderful fragrance and autumn colour.
  • Easy to grow.
  • Ideal position: most garden situations, likes some sun.
  • Habit: upright.
  • Group: Deciduous Azalea.
  • Subsection: Pentanthera.
  • Introduction date: pre 1900 (1793)
  • Species distribution: Caucasus, Turkey, SW Russia, Georgia, Ukraine.
  • Approximate altitude: Sea-level to 2,200m.
  • Ideal soil: pH 4.5 to 6.
  • RHS Hardiness Rating: H7.
  • How we usually propagate this plant: Seed.
  • Awards: RHS Award of Garden Merit.


Customer Reviews

By on
"Great service ,plant was well packed and in great condition."
Star Rating 5
By on
"Cannot praise this plant enough. Was well packed ,prompt delivery and was outstandingly strong and vigorous. Have been looking for this particular Azalea for a long time. Thank you. "
Star Rating 5
By on
"Both plants were good specimens, they arrived in good condition and had been packaged well. Both are thriving."
Star Rating 5
By on
"Excellent plants and service!"
Star Rating 5
By on
"Very good service and a very healthy plant arrived."
Star Rating 5
By on
"Wanted this Azalea for a long time delighted with healthy plant, beautifully packaged and fast delivery. Thank you"
Star Rating 5
By on
"The Azalea arrived in very good condition. It was well packaged, was free from damage and had been well handled by the carrier. It is now thriving in its new patio container. Extremely pleased. "
Star Rating 5
By on
"Excellent size and quality of plant and great value for money Arrived in a large box in very good condition Would definitely recommend"
By on
"Very good sized plant in excellent condition on arrival."
Star Rating 5
By on
"Lovely, healthy plant. Prompt delivery. "
Star Rating 5
By on
"Deciduous Azalea luteum - lovely specimen, packed well and arrived with a flower still in tact. Shrub proceeded to bloom and looks healthy and well. Quick ordering, fast delivery and no problems. Have used Millais several times and will continue to buy from them."
Star Rating 5
By on
"Excellent services, would definitely use this supplier again. Plants arrived in good condition."
Star Rating 5
By on
"I have moved the excellent plant to a larger container and it has established very well. Two clusters of yellow flowers among good new growth to be followed, hopefully, by fine autumn colours! Thankyou."
Star Rating 5
By on
"After my initial reservation and by contacting the nursery for advice I am delighted to report that the Azalea is flurishing and is growing into a very healthy plant. Thank you to the nursery man for contacting me so quickly to alay my concerns and for the help and service I recieved."
Star Rating 5
By on
"The plants arrived promptly, safely and in good order. They were planted after a very short period of time, in a group of three. They have developed well and are thriving."
Star Rating 5
By on
"Excellent service. Plant came beautifully boxed and very fresh. Planted according to comprehensive instructions and it appears to be thriving. "
Star Rating 5
By on
"Very happy with plants delivered, well packed and healthy - now planted and thriving. Will be placing more orders in future."
Star Rating 5
By on
"The Azalea luteum you sent me was well packaged and arrived in excellent condition. It is a healthy well-balanced plant with buds on every branch. I planted it that same day and look forward to it’s fragrant flowers for years to come."
Star Rating 5
By on
"Excellent plant, excellent service, excellent growing advice"
Star Rating 5

Good to know

From a botanical point of view, deciduous azaleas are part of the rhododendron family, but typically they only have 5-7 stamens in the flowers instead of 11-13 stamens present in other rhododendrons. They make a dazzling display, particularly in yellows, oranges and reds, but can also be very subtle in shades of pink and white. They are tough and fast growing plants typically reaching 125-150cm in 10 years. Our selection ranges from the discreet small flowered species and Ghent varieties, to the bold large flowering Knaphill and Exbury types. Many have the added value of a good scent in spring, and fiery autumn colours before leaf fall. Our newest introductions greatly extend the season into late June and July.

Deciduous azaleas have a stronger root system and will tolerate poorer conditions and a slightly higher pH than other rhododendrons. They can be grown in soils up to pH 6.5 when plenty of ericaceous compost is added. They prefer light dappled shade, but can also be grown in sun or more shade. In sun, the plants will be bushier and lower, with more flowers, but these will not last so long. In shade, the plants will be taller, with fewer flowers, but these will last longer.

All require good moist ericaceous soil with a high organic content. For a guide to plant spacing, use the height we give in 10 years as a guide to the distance between each plant, or approximately 1 plant per 1.5m². Plant no deeper than the top of the rootball, and dig in plenty of good ericaceous compost around the sides.  A teaspoon of slow release feed is sufficient for a 3 litre plant, rising to a small handful for a mature plant.  They are tough plants, and tolerate growing in containers, where their flowers, scent and autumn colours can be appreciated. Re-pot every 3 years for best performance.

Please note: Plants supplied in winter months can look quite bare and stick-like, and may be pruned back to encourage more branching. This is normal, and they will soon fill out in the spring.

For further advice, For further advice, see here

The Basics

Ideal soil

Acidic soil, good organic content, pH 4.5-6.0. Inkarho range of rhododendrons will tolerate soils up to pH7.5

Sun or Shade

Light dappled shade is best for most varieties.


Refer to hardiness rating. Give young plants protection.

Site Selection

Avoid close to trees, roots, invasive weeds, walls, hot patios, dry banks and waterlogged soils. Do not use weed matting or stone mulch

Plant spacing

Use the height shown in 10 years as a guide to the distance between each plant. Allow room for plant to fill out. If planting closer for instant impact, be prepared to move plants after a few years.


  • 3 litre pot, dig in 10-20 litres of ericaceous compost.
  • 7.5 litre pot, dig in 20-30 litres of ericaceous compost.
  • 70-80cm specimen, dig in 60 litres of ericaceous compost.
  • 100-120cm specimen, dig in 120 litres of ericaceous compost.

Planting depth

Plant high in the ground, with the top of the rootball visible.


Slow-release ericaceous feed recommended in March and straight after flowering.


Recommended every few years.


The key ingredient! Keep moist all season, especially the critical time at end of June for flower bud initiation. Tap water is better than no water. Heavy dose at least once per week in dry weather.


Ensure good drainage in winter, especially with yellow varieties. Avoid waterlogged sites.


Not normally required. Tidy wayward shoots after flowering. Evergreen azaleas and Bloombux can be clipped into a low hedge.


Remove old flower-heads, particularly on young or weak plants.

For further advice see here

Size Guide

Size guide

Delivery & Returns

Our website calculates the delivery charge according to weight and delivery location throughout Europe. To see these charges, please enter your postcode and country at the checkout, and you will see the charge vary as you add more items to your wheelbarrow. ***Please note we do not deliver outside of EU***